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-rw-r--r--arch/openrisc/include/asm/io.h2
-rw-r--r--arch/openrisc/mm/ioremap.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/openrisc/include/asm/io.h b/arch/openrisc/include/asm/io.h
index 625ac6ad1205..ee6043a03173 100644
--- a/arch/openrisc/include/asm/io.h
+++ b/arch/openrisc/include/asm/io.h
@@ -31,7 +31,7 @@
void __iomem *ioremap(phys_addr_t offset, unsigned long size);
#define iounmap iounmap
-extern void iounmap(void __iomem *addr);
+extern void iounmap(volatile void __iomem *addr);
#include <asm-generic/io.h>
diff --git a/arch/openrisc/mm/ioremap.c b/arch/openrisc/mm/ioremap.c
index daae13a76743..8ec0dafecf25 100644
--- a/arch/openrisc/mm/ioremap.c
+++ b/arch/openrisc/mm/ioremap.c
@@ -77,7 +77,7 @@ void __iomem *__ref ioremap(phys_addr_t addr, unsigned long size)
}
EXPORT_SYMBOL(ioremap);
-void iounmap(void __iomem *addr)
+void iounmap(volatile void __iomem *addr)
{
/* If the page is from the fixmap pool then we just clear out
* the fixmap mapping.